Brush element with fibers held in channel member and method of making same



W. A. PARRY Feb. 9, 1954 BRUSH ELEMENT WITH FIBERS HELD IN CHANNEL. MEMBER AND METHOD OF MAKING SAME Filed Nov. 29, 1949 2 Sheets-Sheet l F/GZ INVEIV TOR WILLIAM A. PARRY- y 4% ATTORNEY Feb. 9, 195 i W. A. PARRY WITH FIBERS INVENTOR WILL/AM A. PARRY er a/- $4 ATTORNEY HELD IN CHANNEL MAKING SAME 2 Sheets-Sheet 2 BRUSH ELEMENT MEMBER AND METHOD OF Filed Nov. 29, 1949 3 I8 are disposed longitudinally. When the staples are disposed longitudinally they are preferably so positioned that the spaces between them are substantially less than the lengths thereof.

During manufacture the central portions of successive bunches of fibers are moved rearwardly into the channel of the channel member, the bunches of fibers being thus partly folded as shown in Fig. 2. Preferably and as shown, the bunches of fibers are engaged by the staples l8, it, before the bunches of fibers are folded, such engagement being shown at the right in Fig. l, the fibers in the said bunches being initially straight or substantially so. After each staple is engaged with a bunch of fibers, it is pushed rearwardly so that the rear portions of its prongs move through individual holes in the wall 12, the staple serving during its rearward movement to effect the before-mentioned partial folding of the fibers as shown in Fig. 2. The rear end portions of the prongs of each staple are bent at the rear to engage the rear face of the wall l2 as shown at 26, 2D, the staple and the fibers of the corresponding bunch being thus locked in place. The rear end portions of the prongs of the staples are bent as described by engagement with a suitable anvil, not shown. The wall [2 of the channel member may be provided with preformed holes 22, 22 for receiving the prongs of the staples, but in some instances the prongs of the staples may be forced through the wall without the provision of any preformed holes.

' With the parts in the intermediate stage of manufacture as shown in Figs. 1 and 2, the bunches of fibers l6, 16 have their folded portions at least partly within the channel of the channel member, the end portions of the fibers being in widely diverging relationship. The staples embrace the folded portions of the respective bunches of fibers and serve to hold the said bunches in place.

After the bunches of fibers have been engaged by the staples and after the staples have been locked in place in the channel member, the channel member is bent to move the walls [4, 14 toward each other from the relative positions shown in Fig. 2 to the relative positions shown in Fig. 3. The said movement of the side walls [2, I2 toward each other serves to complete the folding of the fibers. nel member may be effected in. any suitable manner, as for instance by a pressing operation, or by passing the channel member longitudinally between two opposed forming rolls. After the channel member has been bent as described, the walls l4, l4 converge forwardly to form a relatively narrow bite through which the fibers extend. At the said bite the walls l4, l4 grip the bunches of fibers to hold the forward portions thereof in approximate parallelism and in positions approximately perpendicular to the rear wall l2. The staples l8, I8 are so related to the side walls l4, I4 that the forward fiber holding portions of the staples are spaced rearwardly to a substantial extent from the forward edges of the channel side walls [4, [4. This relationship enables the forward edge portions of the channel side walls at the said bite to hold the fibers in the before-mentioned substantially parallel forward extending positions. The staples l8, [8 not only prevent forward movement of the bunches of fibers but also prevent longitudinal movement thereof along the channel member.

..Preferably, the rear wall l2 of the channel member is formed with a forwardly projecting The bending of the chanlongitudinal bead 24 which provides a longitudinal recess 26 at the rear. The bent rear end portions 20, 23 of the prongs of the staples l8, l8 are located entirely within the said longitudinal recess 26. Thus the said bent portions 20, 20 of the prongs do not project rearwardly beyond the lateral portions of the rear walls 12. When the brush element is mounted on a holder such as that indicated by the line 28 in Fig. 3, the lateral portions of the rear wall l2 can directly engage the holder without any interference with such engagement being offered by the bent prong portions 20, 20.

Fig. 5 shows a construction very similar to that shown in Fig. 3, differing, however, in that there is a bead 30 having relatively sharp corners instead of having rounded corners as does the bead 24 shown in Fig. 3. The longitudinal rear recess provided by the bead 28 has a flat face for engagement by the bent rear end portions of the prongs of the staples.

The brush element shown in Figs. 6 to 9 is generally similar to that shown in Figs. 1 to 5 except that the channel member instead of being straight is a completely closed ring 32. The channel ring 32 has an inner or rear wall 34 and has oppositely disposed side walls 36, 36. As shown in Fig. 9, the side walls 36, 36 are initially in widely diverging relationship with the rear wall 34.

A circumferential series of folded bunches of fibers is provided, the bunches of fibers being preferably folded transversely as indicated at 33, 38 and being similar to the bunches l6, 16. The successive bunches of fibers of the series are preferably closely adjacent as shown, but the invention is not necessarily so limited. The bunches of fibers 38, 38 are held by a circumferential series of staples 40, 40 similar to the staples 13, IS. The bunches of fibers and the staples are assembled with the channel ring 32 in the same manner as already described in connection with Figs. 1 to 4 and repetition of the description is unnecessary.

After the parts have been initially assembled jecting annular bead 42 similar to the bead 24,

the said bead 42 providing an annular recess 44 at the inner or rear face of the said wall. The bent inner or rear end portions 46, 46 of the prongs of the staples 40, 40 are located entirely within the said annular recess 44. Thus the lateral portions of the inner or rear wall 34 can directly engage a drum on which the brush element may be mounted without any interference with such engagement by the bent portions 46, 46 of the prongs of the staples.

' What is claimed is:

' 1. In a brush element, the combination of a thin walled metallic channel member having a rear wall and having two oppositely disposed side walls which converge forwardly to form a relatively narrow bite near the front, bunches of fibers longitudinally distributed along the channel member with their rear portions folded transversely within the channel of the said member adjacent the rear wall thereof,- the fibers of the 'a' aeeeeiir said. blmches extending through and being 1 rippedat thebit'e between the "channel memberside'walls'and projectingdorwardljrfronrthesaid channel member," and means engagiiig the rear' folded portionsmfthe' said bunohes of fibers to prevent* forward. and" longitudinal movements thereof-i which means includes a longitudinal-- series of staples with-the-prongs of each staple extendingrearwardlythrough individualhbles in" the-freer 'wall of th'e *channel -membee andbent tozengagethe*rear' faceahereof.

2f Iii a: brush element; the 'comhination ofa tlfin walled metallier channelmembbrhaving a rear wall 1 and having, two oppositely" disposedside wallswhichconvergetfdrwardly to form'a relatiiiely" narrow *biternear the 'front, a-ylongi tddinal seriestgof"bunch'es"of-fihers having their rear; pprtions"'folded"within *tl'feohannel "-of the 1 channel member *adiacentthe rear walllthereof and" having; their forward? portions prcrj eating" fdrwardl'ygfr'om the saidmember; the fibersof th'efsaid bunches f extending t through'iand-"bein'g' gripped at "the bite betweem'theehannel mem*- ber sidewalls, and alongitudinal' series of" staples respectively; 'embracing the 'irear folded portions' of the :fibers of thesaidbunehes'with the prongs of "each'j'staple 'ext'endingrearwardly"through -in= diiiidual holes in th'eTTearFWall of'fthei channel m'embervand bent to engage the rear 'face thereof;-'

35 Iii a brush" element, 'the eomisiriatioh of a thin walled metallic channel memberhaving a' rear wall and havin'g twooppositely "disposed "side WaIIsLWhieh" converge forwardly to "form a relae tive'ly; narrow bite "nearlthe front; adongitudihal' series offbunch'es of fibers'havingtheir rear por tions folded :ftransversely1within"the channelof the; channel? member adjacent the. rear wall thereof land h'avinggtheir forward"'portions=projectin'g, forwardly; from" the sai'd'*member; the-' fihersofithe said bunch'es extending through and being ripped at the bite betweenthe chan nel .imemberi side" walls. an some of thefibersiof' eachrtwo vadjacentibunlches .being in engagement with: each other," and ,a j,lo'ngitddirialiseries." of". lcngitlldinally, disposedstapl es 're'spectively eme. brac'mg their rear folded portions ofthe fibers ofjthe csaid iibiinchesgi'withi the 1 prongs. ofi'eacht stapleflextending rearwardlyithrough;individual" hblesr'irilthe rear ,walliof :tne channel. member and bent to engage th'erear fa'ce thereof.

, 4J,If1 avbrushlelemenmi the combination" of a: thin walledmmetaliiei channel member having; a. rear wall and having two oppositely disposed side walIs,,whic5h'. conJ/erge forwardly; to formia 'rel.- atively narrow bitejnearrthe. front,a longitudinal seriesof bunches of ffibersh'aving their" rear por-' ti'dns. folded transversely within the "channel .of the channel member adjacent the rear wall thereof and .havin'g their forward portionspro jefcting N forwardly, from the said"member; the fibers of: the saidibunohes', extending" through and:being grippecl "at the .bite 'betWeenth 'chan; nel' member side walls; anda longitudinal series of longitudih'ally; disposed staples respectively; embracing the rear rowed: portions -of-'-the fibers of the said :b'unches withthe prongs of eachstaple" extendingf rearwardly through individual "holes:

the. rear "walf-of the channel'fmember"and" bent to engage the rear face thereon 5." In a brush" element, the combination of fa thin walled-metallic *channelmemb'er having arear wall andhaving" two oppositely disposed side' walls -which converge forwardly "to-"forme relatively narrow bite*near the -front; a-"lengi f tudinalseriesr -of closely": adjacent bunches of theprongs of each' staple extendihg'erearwardltre through 'individual holes inthe rearfiwall of the channel 'inembemand bent t engage there'ari-fae'e thereof, the said staples bemg positiened with spaces-between them whiclf are-substantially less thaH-thelengths thereof-:-

6L In ahi'ush element, th'e*-combi1iation==ofa thin walled metallili"channel member h aving a rear wall 'and havingtwo' oppositelvdisposedside? walls which converge forwardlig to "form a -rel= atively narrow bite near" the' fronty a longitu dinal seriesmf bunches L of' -filiers havii'rg their; rear portions folded transversely within= the channel 1 of the a channel member adiae'entl thev rear 'wall -thereof and havingwhei-r" for-ward per tions *projecting forw-ardly fromthe sai-d mem her, thefibers of the-saidburlehese extending?- throughand being gripped at the *bite between the channel m'embew"side 'wallsi',and a ldngitu dinal series oflongithdihalli gdisposedstapleswea' spectively 'embraeingthe 'rear' fdldd portidns of the fibers of the saidbunches with the prongsi: of'each stapleextending-'-rearwardly'-througlr dividual holes in the rear walfof the-chiannel*' member n a e herearface thereofi.

the forward; portions of 1 the"said 'staples-*being v spaced i'earwardl'i ='to--a substantial *extent fr'om* the i said bite b'etween"the chtmnehmembersid walls.

'7. In =abrush element? the-*combination ofa" thin walled metallic -ch'annelmem'ber *having "'a rear wall" and-two* oppositelydisppsed side-Wall's"; the said rear *wall-of -thechannel-member being formed "withaiorwardly' projecting lengitudinal bead therein which provides' a-longittidinal ree cessatthe Tear, alongitudinal' series oftrans versely folded bunches of-*=fib'ers"having-their" folded portions withinthe channelof the channel? member, the said bunchesoffilo'ers being laterallyi engaged by the fo'rwardportidns aofthech'annel side wall's'and being thereby'held "itirfolrild 'pe-- sit'idns with the forward" portions; of the fillers substantially perpendicular 'to the'-rear*"wallfofi' the channel member;- and="a'-longitudinalf'series: of staples embracing---the inner folded portions: of the respective" bunches" of fibers with ith'e. prongs of the staples--"exten'dihg"through-indi vidual holes inthe-beadinthen-ear walliof'the. channel member; the"forward-:portions" of the said staple'sb'eing spaceddearwardlYrto' a 'sub stantial extent front the said-forward"portions .ofthechannel side walls" andtheprongsmftlfef said staples having their-rear portionsldcatedene" may within the saidlongitudihahrecess formed: byth'e saidbead'of the rearwall? 8." In an annular brush"elementfithe"combinaa: tion" of" a thin wall'e'd metallie ringfichannel shaped 'irl cross section and having: an" inner or'rear wall and-also havingtwo oppositely"dis posed side walls which converge outwardly' orx forwardli? -to form a relatively narrow-bite "near the outer-front portion," bunches of "'fibers'"cir=- cumferentially-- distributew along the channel?" riiig- Withtheir 'inner 'or rear port-ions:- flded" transversely within ther ch'a-nmeli of-the"saidringadjacent the inner or rear wall thereof, the fibers of the said bunches extending through and being gripped at the bite between the channel ring side walls and projecting outwardly or forwardly from the said channel ring, and means engaging the inner or rear folded portions of the said bunches of fibers to prevent outward or forward and circumferential movements thereof which means includes a circumferential series of staples with the prongs of each staple extending inwardly or rearwardly through individual holes in the inner or rear wall of the channel ring and bent to engage the inner or rear face thereof.

9. In an annular brush element, the combination of a thin walled metallic ring channelshaped in cross section and having a rear wall and also having two oppositely disposed side walls which converge outwardly or forwardly to form a relatively narrow bite near the outer front portion, a circumferential series of bunches of fibers having their inner or rear portions folded within the channel of the channel ring adjacent the inner or rear wall thereof and having their outer or forward portions projecting outwardly or forwardly from the said ring, the fibers of the said bunches extending through and being gripped at the bite between the channel ring side walls, and a circumferential series or staples respectively embracing the inner or rear folded portions of the fibers of the said bunches with the prongs of each staple extending inwardly or rearwardly through individual holes in the inner or rear wall of the channel member and bent to engage the inner or rear face thereof.

10. In an annular brush element, the combination of a thin walled metallic ring channelshaped in cross section and having a rear wall and also having two oppositely disposed side walls which converge outwardly or forwardly to form a relatively narrow bite near the outer front portion, a circumferential series of bunches of fibers having their rear portions folded transversely within the channel of the channel ring adjacent the inner or rear wall thereof and having their outer or forward portions projecting outwardly or forwardly from the said ring, the fibers of the said bunches extending through and being gripped at the bite between the channel ring side walls, and a circumferential series of circumferentially disposed staples respectively embracing the inner or rear folded portions of the fibers of the said bunches with the prongs of each staple extending inwardly or rearwardly through individual holes in the inner or rear wall of the channel member and bent to engage the inner or rear face thereof.

11. In an annular brush element, the combination of a metallic ring channel-shaped in cross section and having an inner or rear wall and two oppositely disposed side walls, a circumferential series of transversely folded bunches of fibers having their folded portions within the channel of the ring, the said bunches of fibers being laterally engaged by the outer or forward portions of the channel side walls and being thereby held in folded positions with the outer or forward portions of the fibers substantially perpendicular to the inner or rear wall of the channel ring, and a circumferential series of staples embracing the inner folded portions of the respective bunches of fibers with the prongs of the staples extending through individual holes in the inner or rear wall of the channel ring and bent to engage the inner or rear face thereof, the outer or forward portions of the said staples being spaced inwardly or rearwardly to a substantial extent from the said outer or forward portions of the channel side walls.

12. In an annular brush element, the combination of a metallic ring channel-shaped in cross section and having an inner rear wall and two oppositely disposed side walls, the said inner or rear wall of the channel ring being formed with a forward projecting annular bead therein which provides a circumferential recess at the rear, a circumferential series of transversely folded bunches of fibers having their folded portions within the channel of the ring, the said bunches of fibers being laterally engaged by the forward portions of the channel side walls and being thereby held in folded positions with the outer or forward portions of the fibers substantially perpendicular to the inner or rear wall of the channel ring, and a circumferential series of staples embracing the inner folded portions of the respective bunches of fibers with the prongs of the staples extending through the bead in the inner or rear wall of the channel member, the forward portions of the said staples being spaced rearwardly to a substantial extent from the said forward portions of the channel side walls and the said prongs of the staples having their rear portions located entirely within the said circumferential recess formed by the said bead of the inner or rear wall.

13. The method of making a brush element which comprises, providing a thin walled metaliic channel member having a rear wall and two oppositely disposed side walls initially in widely diverging relationship with the rear wall, providing a succession of bunches of transverse fibers, providing a succession of U-shaped staples, engaging successive staples with the central portions of successive bunches of fibers, moving the said central portions of the successive bunches of fibers rearwardly into the channel of the channel member to partly fold the said bunches, moving the prongs of the said staples rearwardly through individual holes in the rear wall of the channel member at longitudinally spaced positions so that the front portions of the staples hold the bunches of the fibers, bending the rear portions of theprongs of the staples into engagement with the rear face of the rear wall of the channel member so as to lock the staples and the partly folded bunches in place, and finally bending the channel member to move the side walls thereof toward each other so that the said side walls serve to additionally fold the bunches of fibers and to firmly grip them.

14. The method of making a brush element which comprises, providing a thin walled metallic channel member having a rear wall and two oppositely disposed side walls initially in widely diverging relationship with the rear wall, providing a succession of bunches of transverse fibers, providing a succession of U-shaped staples, embracing the central portions of successive bunches of fibers with successive staples, moving the staples rearwardly to partly fold the embraced bunches of fibers and to move the prongs of the staples through individual holes in the rear wall of the channel member at longitudinally spaced positions, bending the rear portions of the prongs of the staples into engagement with the rear face of the rear wall of the channel member so as to lock the staples and the partly folded bunches in place, and finally bending the channel member to move the said walls thereof toward each other so that the said side walls serve to additionally fold the bunches of fibers and to firmly grip them.

15. The method of making a brush element which comprises, providing a metallic channel member having a rear wall and two oppositely disposed side walls initially in widely diverging relationship with the rear wall, the said rear wall of the channel member being formed with a forward projecting longitudinal bead therein which provides a longitudinal recess at the rear, providing a succession of bunches of transverse fibers, providing a succession of U-shaped staples, em-' bracing the central portions of successive bunches of fibers with successive staples, moving the staples rearwardly to partly fold the embraced bunches of fibers and to move the prongs of the staples through individual holes in the bead of th rear wall of the channel member at longitudinally spaced positions, bending the rear portions of the prongs of the staples into engagement with the rear face of the rear wall of the channel member entirely within the longitudinal recess formed by the said bead of the rear wall so as to lock the staples and the partly folded bunches in place, and finally bending the channel member to mov the side walls thereof toward each other so that the said side walls serve to additionally fold the bunches of fibers and to firmly grip them.

16. The method of making an annular brush element which comprises, providing a metallic ring channel-shaped in cross section and having an inner or rear wall and two oppositely disposed side walls initially in widely diverging relationship with the inner or rear wall, providing a succession of bunches of transverse fibers, providing a succession of U-shaped staples, embracing the central portions of successive bunches of fibers with successive staples, moving the staples inward or rearward to partly fold the bunches of fibers and to move the prongs of the staples through individual holes in the rear wall of the channel member at circumferentially spaced positions, bending the inner or rear portions of the prongs of the staples into engagement with the inner or rear face of the inner or rear wall of the channel member to lock the staples and the partly folded bunches in place, and finally bending the channel ring to move the side walls thereof toward each other so that the said side walls serve to additionally fold the bunches of fibers and to firmly grip them.

WILLIAM A. PARRY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,448,744 Hastings Mar. 20, 1923 1,835,672 Shank Dec. 8, 1931 1,941,343 Epp Dec. 26, 1933 

